期刊文献+

Competition for land resources:driving forces and consequences in crop-livestock production systems of the Ethiopian highlands

原文传递
导出
摘要 Introduction:Ethiopia has made efforts to tackle the challenges of low crop and livestock productivity and degradation of land resources through various rural development strategies.However,increasing demands for food,animal feed,fuel,and income-generating activities are putting pressure on the land.In this paper,we describe the production pressure and competition between crop and livestock production,quantify rates of land-use/cover(LULC)changes,and examine driving forces and consequences of land conversion.Methods:The study was conducted in Gudo Beret watershed,North Shewa Zone of Amhara region,Ethiopia.It used a combination of methods including remote sensing,household interviews,field observations,focus group discussions,and key informant interviews.Supervised and unsupervised image classification methods were employed to map LULC classes for 31 years(1984–2016).Results:The results of satellite remote sensing revealed that 51%of the land in the study area was subject to accelerated land conversions.The household survey results indicated that feed resources and grain production pressures were 1.43 and 1.34 t ha^(−1) respectively.The observed annual changes in plantation and settlement areas were 2.6%and 2.9%.This was mainly at the expense of bushland and grazing land systems.Cropland increased(0.4%year^(−1))while grazing land reduced(3.5%year^(−1))under contrasting dynamics and competitive changes.An increase in human and livestock populations and farm expansion were major drivers of land conversion that adversely affected household livelihoods and the natural ecosystem.The consequences of these pressures resulted in a lack of animal feed,low crop-livestock productivity,and a reduction in natural vegetation coverage.Conclusions:We suggest that sustainable land resource management,more integrated crop-livestock production,and the use of productivity-enhancing technologies could play a role in managing competition for land resources.
出处 《Ecological Processes》 SCIE EI 2018年第1期333-347,共15页 生态过程(英文)
基金 This study was financially supported by the United States Agency for International Development(USAID)through Africa RISING research program.
  • 相关文献

参考文献2

二级参考文献18

  • 1石敏俊 ,王涛 .中国生态脆弱带人地关系行为机制模型及应用[J].地理学报,2005,60(1):165-174. 被引量:38
  • 2封志明,史登峰.近20年来中国食物消费变化与膳食营养状况评价[J].资源科学,2006,28(1):2-8. 被引量:114
  • 3朱会义.中国土地利用的分区优势及其演化机制[J].地理学报,2007,62(12):1318-1326. 被引量:13
  • 4Spitzer RL, Gibbon M, Williams JBW. Structured Clinical Interview for Axis I DSM-IV Disorders. Biometrics Research Department: New York State Psychiatric Institute; 1994.
  • 5Cohen J. A coefficient of agreement for nominal scales. Educ Psychol Meas. 2960; 20(1): 37-46.
  • 6Duberstein PR, Ma Y, Chapman BP, Conwell Y, McGriff J, Coyne JC, et al. Detection of depression in older adults by family and friends: distinguishing mood disorder signals from the noise of personality and everyday life. Int Psychogerietr. 2011; 23(4): 634-643. doi: http://dx.doi.org/10.1017/ $1041610210001808.
  • 7Tang W, He H, Tu XM. Applied Categorical and Count Data Analysis. Chapman & HalI/CRC; 2012.
  • 8Landis JR, Koch ~36. The measurement of observer agreement for categorical data. Biometrics. 1977; 33: 159- 174. doh http://dx.doi.org/10.2307/2529310.
  • 9Ma Y, Tang W, Feng C, Tu XM. Inference for kappas for longitudinal study data: applications to sexual health research. Biometrics. 2008; 64: 781-789. doi: http://dx.doi. org/10.1111/j. 1541-0420.2007.00934. x.
  • 10Feinstein AR, Cicchetti DV. High agreement but low kappa: I. The problems of two paradoxes. J Clin Epidemiol. 1990; 43(6): 543-549. doi: http://dx.doi.org/10.1016/0895- 4356(90)90158-L.

共引文献40

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部